I've never seen that on the output of any audio amp and I've seen thousands of audio amps.

More than likely those are the Emitter Resistors for a complementary pair audio output amp that are fried.

These are available labeled as such from outfits like MCM, Mouser, etc. MCM is a good source IMO.

BUT -- if the emitter resistors are open, you likely need to replace both output transistors as well, as they are likely shorted.

Shorting the output of a TransformerLess Output solid state power amp should never be done, as you've found out, Ohm's law again, the amp sees that short as a load only the devices in the amp can't pass enough current for such a low impedance and something has to give. It is the device which fails.

You are absolutely right they 'were' emitter resistors. They are not open but test out at 1 ohm each and are swelled and cracked. Yup the transistor pair are both shorted from what I could tell using a diode checker.

If you have bias diodes in the base-emitter of the output transistorsreplace them. If used and they fail they cause the finals to run hot.They also shift the bas point of the finals and cause crossover distortion.If the stages of the amp are DC Coupled check the preceding stage.You likely took out the driver stage if DC Coupled.

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